Dawn Hamilton was trained as a clinical nutritionist by Patrick Holford and also has a PhD in psychology. Her activities include providing nutrition, lifestyle, and psychological advice to individuals on a one-to-one basis and running training courses for companies and the general public on health, well-being and personal development. She regularly commentates on health topics in the media and works with a wide range of personal development and complementary therapies.

Jane Sen is chef at the Bristol Cancer Help Centre and has gained extensive knowledge of the power of nutrients to combat illness from her close collaboration with the Centre's medical staff.